EXCLUSIVE: You only turn 40 once, and Discovery is marking its milestone birthday in a unique way. The network is today launching Discovery Changed My Life, a four-part international series about how ...

Even the tiniest discoveries can have outsized significance, a worm in a salty lake hints at life yet to be found.

For decades, scientists have imagined Martian life as something that might look faintly familiar, perhaps microbes not so different from those that once thrived in Earth’s ancient seas. A new wave of ...

A mudstone sample from Jezero Crater shows textures and minerals that on Earth often form through microbial activity. Scientists caution that nonbiological processes could also explain the features, ...